GMI™ 20 to GMI 40 Adapter Plate
This adapter plate allows you to install a new GMI 40 marine instrument into the existing cutout of a GMI 20 in your dash.
![Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]](http://www.marineoutfitters.net/cdn/shop/files/115772XL_{width}x.jpg?v=1788574809)
![Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]](http://www.marineoutfitters.net/cdn/shop/files/115772XL.jpg?v=1788574809)